| 'Y' Companies | Period (Timeline) | Item #: Game | Item #: Non-Game |
|---|---|---|---|
| Y's Gear [Japan] | 1999 (1 year) | ||
| Yachiyo Electronics [Japan] | 1979 to 1983 (5 years) | ||
| Yacht Club Games | 2014 to 2021 (8 years) | ||
| Yada East Corp. | 1989 (1 year) | ||
| Yaggy, L.W. [Lake Forest, IL, USA] | 1898 (1 year) | ||
| Yahoo Soft. | 1982 (1 year) | ||
| Yahoo! Japan | 2010 (1 year) | ||
| Yahoo! Korea | 2005 (1 year) | ||
| Yakuto | 2015 to 2017 (3 years) | ||
| Yale & Towne Mfg. Co. [Stamford, CT, USA] | 1898 (1 year) | ||
| Yale Wonder Clock Co. [Burlington, VT, USA] | 1899 to 1905 (7 years) | ||
| Yama [Japan] | 1996 to 2013 (18 years) | ||
| Yamaco | 1991 to 1996 (6 years) | ||
| Yamada Kikaku | 1996 (1 year) | ||
| Yamagiwa | 1982 (1 year) | ||
| Yamaha | 1982 to 2004 (23 years) | ||
| Yamakita, Atsushi | |||
| Yamama | 1989 (1 year) | ||
| Yamamoto | 1991 (1 year) | ||
| Yamasa [Japan] | 1980 to 2017 (38 years) | ||
| Yamashita | |||
| Yamate USA | 1991 (1 year) | ||
| Yamazaki | 1992 (1 year) | ||
| YamiBugyou Co. | 2000 to 2002 (3 years) | ||
| Yan Yanhuo [China] | |||
| Yancha | |||
| Yankee Game Technology | 1989 (1 year) | ||
| Yann Woei Enterprise Co., Ltd. | 2001 (1 year) | ||
| Yanoman Games | 1990 to 1998 (9 years) | ||
| Yanshan RuanJian [China] | 1990 to 1994 (5 years) | ||
| Yanyaka [Japan] | 1993 (1 year) | ||
| Yappa Pie | 2017 (1 year) | ||
| Yarbrough, Alan | 1978 (1 year) | ||
| Yashica | 1984 (1 year) | ||
| Yasty-Serv | 1995 (1 year) | ||
| Yasuda | |||
| Yawdim | 1992 (1 year) | ||
| Yax [Japan] | 1992 (1 year) | ||
| Yazar Media Group, LLC | 2015 to 2016 (2 years) | ||
| Ybarra Productions | 1993 (1 year) | ||
| Year Zero Soft. [Spain] | 1989 to 1992 (4 years) | ||
| Yell | 2007 to 2008 (2 years) | ||
| Yellow Box | 1994 (1 year) | ||
| Yendes Mfg. & Sales Co. [Dayton, OH, USA] | 1932 (1 year) | ||
| Yendes Service, Inc. [Dayton, OH, USA] | 1934 (1 year) | ||
| Yeno | 1984 to 1991 (8 years) | ||
| Yeo Myung Electronic Co., Ltd. [Korea] | 2004 to 2005 (2 years) | ||
| Yermani Soft | 2005 to 2010 (6 years) | ||
| Yerrick, Damian | 2000 to 2014 (15 years) | ||
| Yes Soft. | 1984 to 1995 (12 years) | ||
| YesCrew | 1998 (1 year) | ||
| YesGnome, LLC | 2017 to 2019 (3 years) | ||
| Yeti [Japan] | 2013 (1 year) | ||
| Yggdrasil Gaming, Ltd. | 2019 to 2023 (5 years) | ||
| Yggdrisil Soft. | 1996 (1 year) | ||
| Yggi | 2012 (1 year) | ||
| Yie Ar Soft | 1987 (1 year) | ||
| Yippie Club | 1991 (1 year) | ||
| YM Soft | 1990 (1 year) | ||
| YMC | 1984 to 1985 (2 years) | ||
| YNK Korea | 2004 (1 year) | ||
| Ynnis Interactive | |||
| Yob, Gregory | 1978 (1 year) | ||
| Yochien, Madou [Japan] | 1991 (1 year) | ||
| Yoda Cooperation | 1988 (1 year) | ||
| Yoga Computing | 1983 (1 year) | ||
| Yogscast Games | 2023 (1 year) | ||
| YOH [Japan] | 1989 to 1995 (7 years) | ||
| Yohio Mfg. Co. [Youngstown, OH, USA] | 1931 (1 year) | ||
| Yoho & Hooker [Youngstown, OH, USA] | |||
| Yojigen | 1994 to 1995 (2 years) | ||
| Yoko Soft. Co., Ltd. | 1992 to 1995 (4 years) | ||
| YoKoMuMu | 1998 (1 year) | ||
| Yokoshiba Soft | 1994 (1 year) | ||
| Yollim Communication [Korea] | 1999 (1 year) | ||
| YONA Tech. | 2000 (1 year) | ||
| Yonezawa Corp. [Japan] | 1980 to 1998 (19 years) | ||
| Yong Yong [China] | 1998 to 2000 (3 years) | ||
| Yonshi | 1999 (1 year) | ||
| YooMedia | 2003 (1 year) | ||
| Yoostar Ent. Group, Inc. | 2011 (1 year) | ||
| Yopino | 1990 (1 year) | ||
| York 10 Computerware | |||
| Yorkshire Boys, The | 1990 to 1992 (3 years) | ||
| Yorktown Mfg. Co. [Petersburg, VA, USA] | 1930 (1 year) | ||
| Yoshida, Satoshi | 1996 (1 year) | ||
| Yoshimoto Kogyo | 1995 to 1997 (3 years) | ||
| Yoshimura [Japan] | |||
| Yoshitaka Higashi | 1992 (1 year) | ||
| Yoshiyama Shouji | 1975 (1 year) | ||
| Yostar, Ltd. | 2020 (1 year) | ||
| You-en-tai | 1992 to 1996 (5 years) | ||
| Youal Jifh Enterprise Co., Ltd. [Taichung city, Taiwan] | 2001 (1 year) | ||
| Youkan Soft | 1994 (1 year) | ||
| Young & Co., W.J. [San Francisco, CA, USA] | 1907 (1 year) | ||
| Young Corp [Japan] | 1995 (1 year) | ||
| Young Electronics Co., Ltd. [Korea] | 2003 to 2004 (2 years) | ||
| Young Horses, Inc. | 2020 (1 year) | ||
| Young Toys [Korea] | 1989 (1 year) | ||
| Young, Charles P. [York, PA, USA] | 1892 to 1924 (33 years) | ||
| Young, Mike | 1984 to 1990 (7 years) | ||
| Young, Richard | 1986 (1 year) | ||
| Young, Willard B. [New York, NY, USA] | 1893 (1 year) | ||
| YoungCom Plaza [Korea] | 1995 (1 year) | ||
| YoungSoft [Brazil] | 1991 (1 year) | ||
| Your Sinclair | 1986 to 1993 (8 years) | ||
| Youzu Pte., Ltd. [Singapore] | 2019 (1 year) | ||
| Yoz [Japan] | |||
| YRprod | 2005 to 2007 (3 years) | ||
| YS [China] | 1994 (1 year) | ||
| Yu | 1992 (1 year) | ||
| Yu-Chu Co. [Newark, NJ, USA] | 1925 to 1933 (9 years) | ||
| Yubis [Japan] | 1988 to 2008 (21 years) | ||
| Yuga | 1988 to 1990 (3 years) | ||
| Yuke's [Japan] | 1998 to 2004 (7 years) | ||
| Yuki Enterprise | 1999 to 2006 (8 years) | ||
| Yukio, Sergio | 2022 (1 year) | ||
| Yukon Computer Products | 1982 (1 year) | ||
| Yumedia | 1995 to 1998 (4 years) | ||
| Yumekobo [Tokyo, Japan] | 1995 to 1999 (5 years) | ||
| Yun Hap Electronics | 1979 (1 year) | ||
| Yun Sung [Korea] | 1990 to 2005 (16 years) | ||
| Yund Bros. Sales Co., Inc. [Albany, NY, USA] | 1953 (1 year) | ||
| Yung Yu | 1992 (1 year) | ||
| Yunizu Corp. | 2000 (1 year) | ||
| YUS Corp. [Russia] | 1990 (1 year) | ||
| Yutaka | 1990 to 1997 (8 years) | ||
| Yuugazoku | 1995 to 1996 (2 years) | ||
| Yuuichi | 1991 (1 year) | ||
| Yuvo | 1992 to 2008 (17 years) | ||
| Yuvo [Germany] | 1986 (1 year) | ||
| YY [Japan] |